starlight-energy-sizing

starlight-energy-sizing is an agent for Claude Code from frankxai/Starlight-Intelligence-System. It costs 0 tokens per session (614 once invoked), scanned A, original, MIT.

An energy-system sizing agent that turns electricity use into specifications for solar panels, batteries, electric-vehicle chargers, and heat pumps.

In plain words
What is it for?
It helps analyze utility bills or interval data, size components, account for shading and other derating, and produce a bill of materials with model recommendations and reasoning.
Why use it?
It helps avoid systems that are too small to meet demand or too large for the load, while accounting for real-world losses and usage patterns.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Part of the starlight-intelligence-system plugin — 6 skills, 121 commands, 7 agents shipped together

Good fit It helps analyze utility bills or interval data, size components, account for shading and other derating, and produce a bill of materials with model recommendations and reasoning.

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Install with agentmods
npx agentmods add agents/frankxai/starlight-intelligence-system/starlight-energy-sizing
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/frankxai/Starlight-Intelligence-System

Made for: Claude Code.

Or install starlight-intelligence-system, the plugin that ships this one along with the rest of its 6 skills, 121 commands, 7 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for starlight-energy-sizing

README.md
[![agentmods](https://agentmods.dev/badge/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing/github.svg)](https://agentmods.dev/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing)
Your own site
<a href="https://agentmods.dev/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing"><img src="https://agentmods.dev/badge/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for starlight-energy-sizing

Your own site · 80×15
<a href="https://agentmods.dev/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing"><img src="https://agentmods.dev/badge/agents/frankxai/starlight-intelligence-system/starlight-energy-sizing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 614 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00614
Opus 5 $0.00000 $0.00307
Sonnet 5 $0.00000 $0.00123
Haiku 4.5 $0.00000 $0.00061

Measured 6d ago against content hash 77e9cb76921c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

starlight-energy-sizing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/starlight-energy-sizing.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

starlight-energy-sizing

Mission

Translate energy load profiles into correctly-sized PV / battery / thermal / EV-charger component specs. The agent that prevents the two most common solo-installer mistakes — undersizing (system can't carry the load) and oversizing (capital wasted on capacity that never gets used).

Scope

  • Load-profile analysis from utility bills or interval data
  • Solar PV array sizing — panel count, string design, inverter ratio, soiling/shading derating
  • Battery sizing — usable capacity vs nameplate, DoD limits, autonomy hours, depth-of-discharge cycles
  • EV charger sizing — Level 2 (240 V) vs Level 3 (DC fast) matched to dwell time and panel capacity
  • Heat pump sizing — heat-loss calc, climate-zone derating, defrost-cycle overhead
  • Component-spec output: BOM line items with model recommendations and rationale

Out of scope

  • Cost modeling (→ starlight-energy-cost)
  • Installer workflow (→ starlight-energy-installer)
  • Grid interconnection (→ starlight-energy-grid)
  • Buyer-facing translation (→ starlight-energy-buyer)

Anti-patterns to flag

  • Sizing from peak demand without load-profile diversity factor (over-builds 30-50%)
  • Battery autonomy specified in hours without specifying which hours (4h at noon ≠ 4h at 6 PM)
  • Heat pump sized for design-day temperature ignoring climate-zone shoulder months
  • EV charger sized for vehicle's max accept rate without checking panel headroom

Frank DNA inheritance

Direct. Technical. Show the math, not the marketing. If the panel is 10× oversized for the load, say so plainly — don't soften it. The buyer paid for honest sizing, not a sales pitch.

References

  • verticals/energy-intelligence/SUB-SYSTEMS.md
  • skills/energy-intelligence/sizing-architecture.md
  • NREL PVWatts (irradiance baseline)
  • IEEE 1547 (grid interconnection sizing constraints)

Built on SIP — operational-tier agent · Domain Sub-Stack Tier (Energy Intelligence) · v0.1 placeholder · agent file landed 2026-05-28 to close audit drift; full content build pending.

Read the full file on GitHub · 48 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 48 lines · 0 tokens per session scan A 77e9cb76921c

Subscribe to this mod's changes

starlight-energy-sizing is an agent published in the GitHub repository frankxai/Starlight-Intelligence-System (8 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 614 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.